Rhizamoeba clavarioides (Penard, 1902) Siemensma, 1980
Diagnosis: cell in slow locomotion resembling a Clavaria mushroom; pseudopodia flattened, sharply tapering or broadly blunt; rapid monotactic form, slender; nucleus ovoid or spherical, nucleolus irregular.
Dimensions: monotactile form 70-220 µm; nucleus 9.6-15.5 µm.
Ecology: several types of water; between sediments.
Remarks: Rhizamoeba-species are usually covered with a layer of debris, which they also can leave easily to adopt a limax form for faster locomotion.